2 * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
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26 #ifndef ScrollAnimatorMac_h
27 #define ScrollAnimatorMac_h
29 #if ENABLE(SMOOTH_SCROLLING)
31 #include "FloatPoint.h"
32 #include "FloatSize.h"
33 #include "ScrollAnimator.h"
35 #include "WebCoreSystemInterface.h"
36 #include <wtf/RetainPtr.h>
39 @class ScrollAnimationHelperDelegate;
40 @class ScrollbarPainterDelegate;
41 @class ScrollbarPainterControllerDelegate;
42 @class ScrollbarPainterDelegate;
44 class ScrollAnimationHelperDelegate;
45 class ScrollbarPainterDelegate;
46 class ScrollbarPainterControllerDelegate;
47 class ScrollbarPainterDelegate;
54 class ScrollAnimatorMac : public ScrollAnimator {
56 ScrollAnimatorMac(ScrollableArea*);
57 virtual ~ScrollAnimatorMac();
59 virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier);
60 virtual void scrollToOffsetWithoutAnimation(const FloatPoint&);
62 #if ENABLE(RUBBER_BANDING)
63 virtual void handleWheelEvent(PlatformWheelEvent&);
64 #if ENABLE(GESTURE_EVENTS)
65 virtual void handleGestureEvent(const PlatformGestureEvent&);
69 virtual void cancelAnimations();
71 void immediateScrollToPoint(const FloatPoint& newPosition);
72 void immediateScrollByDeltaX(float deltaX);
73 void immediateScrollByDeltaY(float deltaY);
75 void setIsDrawingIntoLayer(bool b) { m_drawingIntoLayer = b; }
76 bool isDrawingIntoLayer() const { return m_drawingIntoLayer; }
78 bool haveScrolledSincePageLoad() const { return m_haveScrolledSincePageLoad; }
80 #if USE(WK_SCROLLBAR_PAINTER)
81 bool scrollbarPaintTimerIsActive() const;
82 void startScrollbarPaintTimer();
83 void stopScrollbarPaintTimer();
87 RetainPtr<id> m_scrollAnimationHelper;
88 RetainPtr<ScrollAnimationHelperDelegate> m_scrollAnimationHelperDelegate;
90 #if USE(WK_SCROLLBAR_PAINTER)
91 RetainPtr<WKScrollbarPainterControllerRef> m_scrollbarPainterController;
92 RetainPtr<ScrollbarPainterControllerDelegate> m_scrollbarPainterControllerDelegate;
93 RetainPtr<id> m_scrollbarPainterDelegate;
95 void initialScrollbarPaintTimerFired(Timer<ScrollAnimatorMac>*);
96 Timer<ScrollAnimatorMac> m_initialScrollbarPaintTimer;
99 virtual void notityPositionChanged();
100 virtual void contentAreaWillPaint() const;
101 virtual void mouseEnteredContentArea() const;
102 virtual void mouseExitedContentArea() const;
103 virtual void mouseMovedInContentArea() const;
104 virtual void willStartLiveResize();
105 virtual void contentsResized() const;
106 virtual void willEndLiveResize();
107 virtual void contentAreaDidShow() const;
108 virtual void contentAreaDidHide() const;
109 void didBeginScrollGesture() const;
110 void didEndScrollGesture() const;
112 virtual void didAddVerticalScrollbar(Scrollbar*);
113 virtual void willRemoveVerticalScrollbar(Scrollbar*);
114 virtual void didAddHorizontalScrollbar(Scrollbar*);
115 virtual void willRemoveHorizontalScrollbar(Scrollbar*);
117 float adjustScrollXPositionIfNecessary(float) const;
118 float adjustScrollYPositionIfNecessary(float) const;
119 FloatPoint adjustScrollPositionIfNecessary(const FloatPoint&) const;
121 #if ENABLE(RUBBER_BANDING)
122 bool allowsVerticalStretching() const;
123 bool allowsHorizontalStretching() const;
124 bool pinnedInDirection(float deltaX, float deltaY);
125 void snapRubberBand();
126 void snapRubberBandTimerFired(Timer<ScrollAnimatorMac>*);
127 void smoothScrollWithEvent(PlatformWheelEvent&);
128 void beginScrollGesture();
129 void endScrollGesture();
131 bool m_inScrollGesture;
132 bool m_momentumScrollInProgress;
133 bool m_ignoreMomentumScrolls;
135 CFTimeInterval m_lastMomemtumScrollTimestamp;
136 FloatSize m_overflowScrollDelta;
137 FloatSize m_stretchScrollForce;
138 FloatSize m_momentumVelocity;
140 // Rubber band state.
141 CFTimeInterval m_startTime;
142 FloatSize m_startStretch;
143 FloatPoint m_origOrigin;
144 FloatSize m_origVelocity;
145 Timer<ScrollAnimatorMac> m_snapRubberBandTimer;
147 bool m_drawingIntoLayer;
148 bool m_haveScrolledSincePageLoad;
151 } // namespace WebCore
153 #endif // ENABLE(SMOOTH_SCROLLING)
155 #endif // ScrollAnimatorMac_h